| RHP1109 | Survey taken of lands flooded at Kytra upper and lower pools and also westward of the Glengarry march, Inverness-shire | 1822 |
| RHP1110 | Plan of the present position of the Caledonian Canal passing through the Government Land at Fort Augustus, Inverness-shire | 1824 |
| RHP1114 | Plan of the Caledonian Canal and lands belonging thereto, Inverness-shire | 1843-1844 |
| RHP1115 | Plan of that portion of the Caledonian Canal extending along the property of the Board of Ordnance at Fort Augustus, Inverness-shire | 1846 |
| RHP1297 | Plan of the farm of Dalcataig, property of Mr. Grant of Glen Morrison. Taken from plan made in 1840 by McLean and Morrison, Inverness | 1854 |
| RHP1305 | Ordnance Survey 1 inch map (Sheet 73: Fort Augustus) showing fishings in Loch Ness bought by Lord Lovat | [late 19th century] |
| RHP1616/1-4 | Plans (4) showing line of the West Highland Railway (Inverness Extension): 1894-95 | 1894-1895 |
| RHP1618 | Plan of part of the Caledonian Canal passing through the estate of Glengarry from Loch Lochy to Aberchalder: copied in 1863 from survey of 1844 | 1863 |
| RHP2689 | Plan of Fort Augustus showing crown lands sold and for sale, Inverness-shire | [c 1860] |
| RHP2690 | Plan of site of church and school at [Fort Augustus], Inverness-shire | Late 19th century |
| RHP3351 | Particulars of sale and plan of the estate of Sronlairig (Strongelairg) | Late 19th century |
| RHP11596 | Plan of intended road from Inverness to Fort Augustus. | 1792 |
| RHP11607 | Plan of intended road from the Kirk of Kilmallie to the head of Loch Lochy etc, Inverness-shire | 1796 |
| RHP11626 | Plan of road between Invermoriston and Fort Augustus. | 1804 |
| RHP14956 | Plan and section of proposed salmon channel at waterfall on the River Moriston [near Invermoriston]: 1868 | 1868 |
| RHP14957 | Plan of the mouth of the River Moriston, Inverness'shire | 1876 |
| RHP15060 | Bound plans and sections of the Inverness extension of the Invergarry and Fort Augustus Railway | 1896 |
| RHP15328 | Bound plans and sections of the Invergarry and Fort Augustus Railway: 1895 | 1895 |
| RHP15329 | Bound plans and sections of the extension from Fort Augustus to Inverness of the Invergarry and Fort Augustus Railway: 1895 | 1895 |
| RHP15340 | Bound plans and sections of extension of the West Highland Railway from Achaneich to Inverness: 1894 | 1894 |
| RHP15967 | Plan of North British Railway's station arrangements at Fort Augustus: 1918 | 1918 |
| RHP15968 | Plan of Invergarry and Fort Augustus Railway between Invergarry and Fort Augustus | 1897 |
| RHP16354 | Bound plans and sections of North British and West Highland Railway from Inverroy to Inverness. | 1896 |
| RHP17620 | Plan of Fort Augustus Station (North British Railway). | Dec 1914 |
| RHP17863 | Bound plans and sections of proposed extension of the Highland Railway from Inverness to Fort Augustus. | 1897 |
| RHP18035 | Bound plans and sections (Ordnance Survey sheet missing) of North British and West Highland Railway from Inverroy to Inverness. | 1896 |
| RHP18076 | Bound plans and sections of the proposed extension of the Highland Railway from Inverness to Fort Augustus (sheets 1-3 missing), the North British and West Highland Railway from Inverroy to Inverness, and the Inverness extension of the Invergarry and Fort Augustus Railway, Engineers: Murdoch Paterson William Roberts Sir John Fowler Cunningham Blyth & Westland [Formans & McCall] Lithographers: Robert J. Cook & Hammond, Westminster W. & A.K. Johnston Maclure, Macdonald & Co. | 1896-1897 |
| RHP18097 | Bound plans and sections of extension of the West Highland Railway from Achaneich to Inverness. | 1894 |
| RHP27118 | Sketch plan of sidings available for storage purposes at Fort Augustus Station (London and North Eastern Railway). | 1937 |
| RHP29364 | 1. Distance diagram showing distribution of permanent way staff on branch of the London and North Eastern Railway from Spean Bridge to Fort Augustus. 2. Memorandum on above. | 1930 |
| RHP29365 | Plans (2 copies) of Fort Augustus Station showing position of depot belonging to Shell-Mex Ltd. [London and North Eastern Railway]. | 1930 |
| RHP29365/1 | Plan of Fort Augustus Station showing position of depot belonging to Shell-Mex Ltd. [London and North Eastern Railway]. | 1930 |
| RHP29365/2 | Plan of Fort Augustus Station showing position of depot belonging to Shell-Mex Ltd. [London and North Eastern Railway]. | 1930 |
| RHP29366 | Architectural plans, sections and elevations (2 copies) of depot belonging to Shell-Mex Ltd. at Fort Augustus Station [London and North Eastern Railway]. | 1930 |
| RHP29366/1 | Architectural plans, sections and elevations of depot belonging to Shell-Mex Ltd. at Fort Augustus Station [London and North Eastern Railway]. | 1930 |
| RHP29366/2 | Architectural plans, sections and elevations of depot belonging to Shell-Mex Ltd. at Fort Augustus Station [London and North Eastern Railway]. | 1930 |
| RHP29367 | Sketch plan of part of goods yard at Fort Augustus showing site of proposed trial hole for Shell-Mex Ltd. [London and North Eastern Railway]. | 1930 |
| RHP34677 | Ordnance Survey 1 inch map (Sheet 42) | 1947 |
| RHP37247 | Plan showing proposed additional siding accommodation at Frot Augustus (London And North-Eastern Railway). | 1941 |
| RHP46307 | Plan, elevation and section of proposed bridge over River Oich at Aberchalder | 1850 |
| RHP46317/1 | Architectural drawing of new Abbey Church [St Benedict's Abbey], Fort Augustus, Inverness-shire | 1890 |
| RHP46395 | Ordnance Survey 1/2500 plan marked to show embankments of Caledonian Canal near Fort Augustus | [late 19th century] |
| RHP46400 | Ordnance Survey 6 inch plan marked to show boundaries of Fort Augustus proposed water district | 1874 |
| RHP46445 | 1. Bound plans and sections of West Highland Railway new line from Spean Bridge to Inverness and deviation at Rannoch Station 2. Book of reference (Gazette notice bound in) 3. Duplicate of no.1 | November 1894 |
| RHP46447 | 1. Bound plans and sections of Invergarry and Fort Augustus Railway from Spean Bridge Station to Fort Augustus and pier at Loch Ness 2. Book of reference 3. Gazette notice 4-5. Duplicates of no.1 6. Duplicates of no.3 | November 1895 |
| RHP46450 | 1. Bound plans and sections of Invergarry and Fort Augustus Railway proposed deviation of railway and new pier near Bunioch 2. Book of reference (Gazette notice bound in) | June 1896 |
| RHP46452 | 1. Bound plans and sections of North British Railway and West Highland Railway various works, including lines from Inverroy to Glenfintaig, Fort Augustus to Inverness 2. Book of reference Gazette notice bound in) 3. Duplicate of no.1 | Nov 1896 |
| RHP46454 | 1. Bound plans and sections of North British Railway and West Highland Railway additional connecting line near Fort Augustus 2. Book of reference (Gazette notice bound in) 3. Duplicate of no.1 | December 1896 |
| RHP46455 | Plans of Invergarry and Fort Augustus Railway | November 1896 |
| RHP46457 | 1. Bound plans and section of Highland Railway proposed extension from Inverness to Fort Augustus 2. Book of reference 3-4.Duplicates of nos.1-2 | November 1896 |
| RHP47109 | Ordnance Survey. 6 inch plan marked to show ford and site of proposed bridge at Invervigar and supposed site of sanatorium to the north thereof, produced in causa John Smith and another v Mrs Eliza Stewart Ellice and others | 1904 |
| RHP47740 | Book of reference to plans of Invergarry and Fort Augustus Railway Inverness Extension | November 1896 |
| RHP47794 | Bound plans and sections of Highland Railway proposed extension from Inverness to Fort Augustus | 1897 |
| RHP49663 | Block plan of railway cottages, Aberchalder sold by Russell Ellice and marked to show water supply | October 1956 |
| RHP79030 | Ordnance Survey 6 inch plan (Inverness-shire, sheet XLI) marked to show farm boundaries | [1944-1955] |
| RHP79040 | Ordnance Survey 6 inch plan (Inverness-shire, sheet LIII) marked to show farm boundaries | [1944-1955] |
| RHP79041 | Ordnance Survey 6 inch plan (Inverness-shire, sheet LIV) marked to show farm boundaries | [1944-1955] |
| RHP79042 | Ordnance Survey 6 inch plan (Inverness-shire, sheet LV) marked to show farm boundaries | [1944-1955] |
| RHP79053 | Ordnance Survey 6 inch plan (Inverness-shire, sheet LXVII) marked to show farm boundaries | [1944-1955] |
| RHP79054 | Ordnance Survey 6 inch plan (Inverness-shire, sheet LXVIII) marked to show farm boundaries | [1944-1955] |
| RHP79055 | Ordnance Survey 6 inch plan (Inverness-shire, sheet LXIX) marked to show farm boundaries | [1944-1955] |
| RHP79056 | Ordnance Survey 6 inch plan (Inverness-shire, sheet LXX) marked to show farm boundaries | [1944-1955] |
| RHP79068 | Ordnance Survey 6 inch plan (Inverness-shire, sheet LXXXIII) marked to show farm boundaries | [1944-1955] |
| RHP79069 | Ordnance Survey 6 inch plan (Inverness-shire, sheet LXXXIV) marked to show farm boundaries | [1944-1955] |
| RHP79070 | Ordnance Survey 6 inch plan (Inverness-shire, sheet LXXXV) marked to show farm boundaries | [1944-1955] |
| RHP79083 | Ordnance Survey 6 inch plan (Inverness-shire, sheet XCVIII) marked to show farm boundaries | [1944-1955] |
| RHP79084 | Ordnance Survey 6 inch plan (Inverness-shire, sheet XCIX) marked to show farm boundaries | [1944-1955] |
| RHP79085 | Ordnance Survey 6 inch plan (Inverness-shire, sheet C) marked to show farm boundaries | [1944-1955] |
| RHP83301 | Bound plans of West Highland Railway (Inverness Extension) various works | Nov 1894 |
| RHP83867 | Ordnance Survey 6 inch plan marked to show ford and site of proposed bridge at Invervigar, site of sanatorium, footpath to graveyard, and road from Invervigar to Bridge of Oich, produced in causa Edward Ellice's Trustees v. Parish Councils of Boleskine and Abertarff | Jun 1907 |
| RHP84133 | Plan of former station site at Fort Augustus [British Railways] | [c 1948] |
| RHP88751 | Plan, with site plan, of proposed new burial ground at Foyers | Nov 1949 |
| RHP88759 | Plan and sections, with site plan, of proposed new extension to burial ground at Fort Augustus | Sep 1954 |
| RHP88772 | Copy Ordnance Survey 1 inch map marked to show boundaries of areas proposed to be annexed to Glenmoriston Registration District | 11 Feb 1958 |
| RHP97588 | Ordnance Survey 6 inch plan (Inverness-shire, sheet XLI) marked to show classification of land | [1944-1954] |
| RHP97594 | Ordnance Survey 6 inch plan (Inverness-shire, sheet LIII) marked to show classification of land | [1944-1954] |
| RHP97595 | Ordnance Survey 6 inch plan (Inverness-shire, sheet LIV) marked to show classification of land | [1944-1954] |
| RHP97596 | Ordnance Survey 6 inch plan (Inverness-shire, sheet LV) marked to show classification of land | [1944-1954] |
| RHP97603 | Ordnance Survey 6 inch plan (Inverness-shire, sheet LXVIII) marked to show classification of land | [1944-1954] |
| RHP97604 | Ordnance Survey 6 inch plan (Inverness-shire, sheet LXIX) marked to show classification of land | [1944-1954] |
| RHP97609 | Ordnance Survey 6 inch plan (Inverness-shire, sheet LXXXII) marked to show classification of land | [1944-1954] |
| RHP136025 | Coloured plan of proposed additional siding accommodation at Fort Augustus, with World War II modifications (London & North Eastern Railway) | 24 March 1941 & 11 June 1941 |
| RHP140252 | Plan of Creag Eigin | Aug 1948 |
| RHP143050 | Architectural drawings of Aberchalder Lodge, Invergarry | [1970s] |
| RHP143050/1 | Aberchalder Lodge, Invergarry: ground floor plan | [1970s] |
| RHP143050/2 | Aberchalder Lodge, Invergarry: first floor plan | [1970s] |